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THE OKAPI                          *          305

which will probably prove to belong to a distinct genus,* -*!$ Jias
five horns, the additional pair being placed above the ears.
Sir Harry Johnston has quite recently made known another
genus of Giraffidae living in the Semliki forest, Belgian Congo
district. The skin and two skulls, as well as the bones of the
feet, are known from specimens sent by Sir Harry Johnston to
the Xatural History Museum, and briefly described to the Zoo-
logical Society by Professor Hay Lankester.1 Tiiis creature^ of
which the native name is " Okapi," is proposed to be called
Ocapia johnstoni. The first actual specimens which reached this
country were two bandoliers made from the skin of the flanks,
which were striped black and white, and were not unnaturally
held to be portions of the skin of a new species of Zebra. The
animal is of about the size of a Sable Antelope, and the back
and sides are of a rich brown colour ; it is only the fore- and
hind-limbs which are striped, the striping being longitudinal, i.e.
parallel with the long axis of the body. The head is Giraffe-
like, but there are no external horns; wisps of curled hairs
seem to represent the vestiges of the horns of other Giraffes.
The tail is rather short, and the neck is rather thick and short.
The skull is clearly Giraffine. The basicranial axis is straight,
and the fontanelle in the lachrymal region is very large. Upon
the frontal bones near their parietal border is a large boss on
either side, which presumably represents the horn core or e* os
cornn." On the mandible the great length of the diastema
between the incisors and premolars is a Giraffine characteristic.
The Okapi lives in pairs in the deepest recesses of the forest.
We are acquainted with a few extinct forms, belonging to
Giraffia^ which are extra-African in range. G. si<vcdensis is from
the Pliocene of the Siwalik Hills in India, {•?. attic®, from Greece.
These remains, however, do not include the top of the skull, so that
it is doubtful whether their horns were as in G. camelopardalis.
A closely - allied genus is the extinct tSamotfaerium* This
flourished in Miocene times, and its remains have been found in
the Greek island of Samos. The neck and limbs are shorter than
in the Giraffe, and the horns, longer than in Gtiraffu, are placed
just above the orbit upon the frontal bones alone, instead of
upon the boundary line of frontals and parietals as in Gira/ffh. In
several ways, therefore, the existing Giraffe is a more modified or
1 8oe also Selater, JYoe. ZooL 8oc.> 1901, ii. p. 3,
VOL. X                                                                 '                              X